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comparison graal/com.oracle.truffle.api/src/com/oracle/truffle/api/nodes/UnexpectedResultException.java @ 7267:a4b84ba6dc2e

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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Tue, 18 Dec 2012 15:33:55 +0100
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children 5e3d1a68664e
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7259:494d99e07614 7267:a4b84ba6dc2e
1 /*
2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23 package com.oracle.truffle.api.nodes;
24
25 /**
26 * An exception that should be thrown if the return value cannot be represented as a value of the return type. The
27 * Truffle optimizer has special knowledge of this exception class and will never compile a catch block that catches this
28 * exception type.
29 */
30 public final class UnexpectedResultException extends SlowPathException {
31
32 private static final long serialVersionUID = 3676602078425211386L;
33 private final Object result;
34
35 /**
36 * Creates the exception with the alternative result that cannot be respresented as a value of the return type.
37 * @param result the alternative result
38 */
39 public UnexpectedResultException(Object result) {
40 super(null, null);
41 assert !(result instanceof Throwable);
42 this.result = result;
43 }
44
45 /**
46 * @return the unexpected result
47 */
48 public Object getResult() {
49 return result;
50 }
51
52 /**
53 * For performance reasons, this exception does not record any stack trace information.
54 */
55 @Override
56 public synchronized Throwable fillInStackTrace() {
57 return null;
58 }
59 }